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collapseos/recipes/pcat/blk/608
2020-09-20 20:48:52 -04:00

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: FD@
2 * 16 + ( blkfs starts at sector 16 )
0x0201 BLK( 2 PICK _
0x0201 BLK( 0x200 + ROT 1+ _ ;
: FD!
2 * 16 + ( blkfs starts at sector 16 )
0x0301 BLK( 2 PICK _
0x0301 BLK( 0x200 + ROT 1+ _ ;
: FD$
( get number of sectors per track with command 08H. )
0x03 ( boot drive ) C@ 13H08H
8 RSHIFT 1+ FDHEADS C!
0x3f AND FDSPT C!
;